Datasheet
GP-1818MK
6 
Message ID 
$GPGGA 
GGA protocol header 
UTC Position 
161229.487 
hhmmss.sss 
Latitude 
3723.2475 
ddmm.mmmm 
N/S Indicator 
N 
N=north or S=south 
Longitude 
12158.3416 
Dddmm.mmmm 
E/W Indicator 
W 
E=east or W=west 
Position Fix Indicator 
1 
See Table 2-1 
Satellites Used 
07 
Range 0 to 12 
HDOP 
1.0 
Horizontal  Dilution  of 
Precision 
MSL Altitude 
9.0 
meters 
Units 
M 
meters 
Geoid Separation 
meters 
Units 
M 
meters 
Age of Diff. Corr. 
second 
Null  fields  when  DGPS  is 
not used 
Diff. Ref. Station ID 
0000 
Checksum 
*18 
<CR><LF> 
End of message termination 
Table 2-1 Position Fix Indicator 
Value 
Description 
0 
Fix not available or invalid 
1 
GPS SPS Mode,fix valid 
2 
Differential GPS,SPS Mode,fix valid 
3 
GPS PPS Mode,fix valid 
3.1.2 GLL-Geographic Position-Latitude/Longitude 
Table 3 contains the values of the following Example: 
$GPGLL, 3723.2475, N, 12158.3416, W, 161229.487, A*2C 
Table 3    GLL Data Format 










